This option will show you all connection pool that are not the first one.
This option is designed to check the Initialization block who hold security/important variables.
In other word, if the initialization of this variables does not succeed the user is not authorized to log in otherwise for instance:
It's not recommended to check it on a authentication init block oterhwise you can get this error:
[nQSError: 13024] Successful completion of init block 'Authentication' is required
Init block parameters:
SELECT to_date(to_char(SYSDATE,'YYYY-MM-DD'),'YYYY-MM-DD') FROM DUAL
date '2013-01-01'